
body {
        min-width: 320px;
        max-width: 750px;
        /* flexible 给我们划分了 10 等份 */
        width: 10rem;
        margin: 0 auto;
        line-height: 1.5;
        font-family: Arial, Helvetica;
        background: #f2f2f2;
   }
   a {
    text-decoration: none;
    font-size: .333333rem;
}
@media screen and (min-width: 750px) {
    html {
        font-size: 75px!important;
    }
}
.head-content {
    display: flex;
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 10rem;
    height: 1.173333rem;
    background-color: #FFC001;
}
.classify {
    width: .586667rem;
    height: .933333rem;
    margin: .146667rem .333333rem .132rem;
    background-image: url(../images/classify.png);
    background-size: .586667rem .933333rem;
}
.search {
    flex: 1;
}
.search input {
    outline: none;
    border: 0;
    width: 6.75rem;
    height: .88rem;
    margin-top: .132rem;
    border-radius: .44rem;
    background-color: #fff2cc;
    color: #757575;
    padding-left: .733333rem;
    font-size: .333333rem;
}
.login {
    width: 1rem;
    height: .933333rem;
    margin: .132rem;
    color: #fff;
    text-align: center;
    line-height: .933333rem;
}
/* banner部分 */
.banner {
    width: 10rem;
    height: 4.906667rem;
}
.banner img {
    width: 100%;
    height: 100%;
}
/* 广告部分 */
.ad {
    display: flex;
}
.ad a img {
    width: 100%;
}
.nav {
    width: 10rem;
}
.nav a {
    float: left;
    width: 2rem;
    height: 1.866667rem;
    text-align: center;
}
.nav a img {
    width: 1.093333rem;
    height: 1.093333rem;
    margin: .133333rem .453333rem 0;
}
.nav a span {
    color: #333;
}